Avery's "First" Maker: The TA-800
- Thread starter dcgillespie
- Start date
Rob Thomas
Active Member
Thanks everyone! I think I was finally able to upload a decent quality photo as any pictures don't do this thing any justice. If anyone needs anything regarding a TA-800 such as measurements, additional pictures (not likely) or anything else that I may have uncovered through this process just let me know. I'm very grateful to everyone on AK that has helped make this such a successful project. I want to give back in any way that I can.
Rob
monkboughtlunch
Super Member
Rob,
Your receiver was a "cover girl" in Feb. 1961.
Your receiver was a "cover girl" in Feb. 1961.
Rob Thomas
Active Member
Doubt if that shelf is strong enough!
Really good article on the upcoming (for 1961) implementation of FM MPX in this edition. Page 37.
I think Monc went through Rob's trash or something.
I was finally able to complete drawing out the schematic for the revised power amplifier design installed in Rob's TA-800. Also included on this page is the revised input network installed at the input to the first tone control stage, which is required to maintain the original sensitivity specification of the unit, in spite of the reduced gain of the new power amplifier design. The response specifications given are for the power amplifier design only, and mimic those of the original Fisher power amplifier section -- this to maintain the same aural presentation. The response of the tone control section remains as originally designed as well.
For those with a TA-800 who are tired of jumping through the hoops necessary to find any acceptable 7199 tubes anymore, this eliminates that concern, and produces a dead quiet unit under minimum volume conditions. The revised power supply design is next up on the drawing board.
Dave
For those with a TA-800 who are tired of jumping through the hoops necessary to find any acceptable 7199 tubes anymore, this eliminates that concern, and produces a dead quiet unit under minimum volume conditions. The revised power supply design is next up on the drawing board.
Dave
Rob Thomas
Active Member
Hey guys. Just wanted to say we just passed the 6 month mark and the old girl is still singing sweetly. Thanks again to this wonderful community and especially Dave!
Rob
Rob Thomas
Active Member
2 new S/N's as found on eBay. 10669A & 10736A
The second one is still listed and has a buy it now price of $1800. Has all of the paperwork including the Operating Manual which I've never seen!
So far the known serial numbers are;
10141 A
10396 A
10669 A
10736 A
1127_ B
11575 C
11739 _
12186 C
12944 C
Not a whole lot. Mine is the highest number and so far we have no evidence that over 3000 of these guys were ever made.
The second one is still listed and has a buy it now price of $1800. Has all of the paperwork including the Operating Manual which I've never seen!
So far the known serial numbers are;
10141 A
10396 A
10669 A
10736 A
1127_ B
11575 C
11739 _
12186 C
12944 C
Not a whole lot. Mine is the highest number and so far we have no evidence that over 3000 of these guys were ever made.
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I've got BugleGirl's Downstairs. I'll check the # and report back. Might take me a couple days to negotiate the stairs down and back tho.
Saw that Rob, its a nice looking unit. Glad yours is still working fine! AL
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Rob Thomas
Active Member
Think she actually reported her s/n to Dave earlier and I have it in my list.
I actually contacted the seller on eBay and asked if he could upload a scan of the Operating Manual since I haven't been able to find one before. He agreed! I'll post it when I have it!
Send a copy to jon @ FISHERCONSOLES also.
Rob Thomas
Active Member
Planning on it. That is such a great resource.
Rob Thomas
Active Member
Awesome! I was hoping an AK member would scoop that one up. Cosmetically it looks amazing. Most of these brass-faced units look pretty beat up but you got a beautiful one!
Let me know if you have any questions, although Dave probably covered EVERYTHING in this thread.
PS, The seller never got back to me on the Operating Manual.. If you could scan that online for the community we would all thank you.
Let me know if you have any questions, although Dave probably covered EVERYTHING in this thread.
PS, The seller never got back to me on the Operating Manual.. If you could scan that online for the community we would all thank you.
One nice thing about the real brass faces though, you can polish them without bothering the lettering. Its engraved. The hard part is getting the polish out of the recesses. My TA-600 looked an absolute mess when I got it, but a little Brasso did wonders. Its not a 10/10 but it went from probably a 3 to a solid 7. The parts unit I have is a plated or tinted steel face, that one is just trash. Once the rust bleeds through the plating you can't do anything with it.
